joshuatree writes "After talking to Chris, John and Phil, Simon and I had a look into Compass to see what the sump looked like for a future dive. Phil showed us the way and with 5x 5-foot drain rods for company we made the tortuous crawl to the sump. We got 3 and a half rods into the water before encountering a blockage - could be an up-dip (hooray) a bend (!) or a constriction (!!!). Getting all of my body in there feet-first, it was cosy, but not too tight, so a further investigation with a bottle is in order. This is definitely a trip for the skinny conoisseur, but the formations in the 1 decent chamber are fantastic, with some straws several feet in length! I thought Chris and John were certifiable before this trip, but now I know for sure!"